MAN: Oh, my god.
WOMAN: It seems to be like illuminating.
MAN: It's actually morphing shape and rotating as well.
This is phenomenal.
Australia is certainly a hotspot for UFO sightings.
We've had a phenomenal growth in the reporting of UFO sightings
by the general public, especially since the advent
of the internet.
But all evidence shows that UFOs have
definitely been visiting Australia for tens of thousands
of years.
We've had records engraved on cave artwork
by the Australian Aborigines, which
goes back thousands of years.
Australia is one of the most mysterious continents.
And the Aboriginals have all kinds of ancient stories
of sky gods coming down.
These are probably some of the oldest
stories of extraterrestrial intervention
that we have on planet Earth.
Australia was something of a last frontier
long after America was settled.
Well, it was 1770 that the British explorer Captain Cook
actually came across Australia.
And it wasn't until 1788 that it was really settled.
That was the east coast of Australia settled by convicts.
That's what the British brought from their prisons.
NARRATOR: Today, the area of Sydney that the British first
settled is a bustling metropolis and Australia
has become one of the most popular tourist destinations
on Earth.
But hidden behind this modern facade
is nearly 2.5 million square miles
of undeveloped and sparsely populated
land, known as the Outback.
And while Australia is a relatively new land
to the Western world, for the nearly 700,000 people that
call the continent their ancestral home,
it has a history that dates back tens of thousands of years.
There's something very, very special about Australia.
Here, we have a situation where this huge landmass has been
pretty much cut off from the rest
of the world for 40,000 years.
And we don't really find that in many other places in the world.
NARRATOR: But what was happening on this island continent
for the tens of thousands of years
that it existed in isolation?
When the first Europeans arrived here,
they didn't have much knowledge in regards to the sky world,
where our people had much ancient knowledge
of the star system and the constellation of the stars.
Our knowledge and wisdom is so old.
NARRATOR: Anthropologists have dated the existence
of the Australian Aboriginal people back 60,000 years,
making it the most ancient continuous culture
in the world.
The Aboriginal peoples of Australia
are one of the world's very, very oldest cultures.
No other cultures in the world can compare
with the Australian cultures.
They have knowledge that's been around for a lot longer
than really any of our knowledge has been around.
NARRATOR: The aboriginal people have
no official written language.
Art, music, and oral storytelling
are how they pass their histories and sacred knowledge
to future generations.
Their past is encoded on various rock walls
scattered across the continent.
Our oral traditions or stories that are passed down
from generation to generation, the wisdom
and knowledge that have been given to us by our god--
they're 10,000 or more years older than the Stonehenge
in England.
They're 20,000 or 30,000 years older
than the pyramids of Egypt.
NARRATOR: These ancient traditions are all strongly
tied to Australia's connection with the stars
and with the beings that are said
to have come down from them.
As evidence, ancient astronaut theorists
point to the caves of the northwest Kimberley region
that contain depictions of visitors called the Wandjina--
the sky heroes of one of Australia's indigenous clans.